61510651 has 2 divisors, whose sum is σ = 61510652. Its totient is φ = 61510650.

The previous prime is 61510643. The next prime is 61510679. The reversal of 61510651 is 15601516.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61510651 - 2³ = 61510643 is a prime.

It is not a weakly prime, because it can be changed into another prime (61510621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30755325 + 30755326.

It is an arithmetic number, because the mean of its divisors is an integer number (30755326).

Almost surely, 2^61510651 is an apocalyptic number.

61510651 is a deficient number, since it is larger than the sum of its proper divisors (1).

61510651 is an equidigital number, since it uses as much as digits as its factorization.

61510651 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 900, while the sum is 25.

The square root of 61510651 is about 7842.8726242366. The cubic root of 61510651 is about 394.7451242579.

The spelling of 61510651 in words is "sixty-one million, five hundred ten thousand, six hundred fifty-one".